Finding the Fourth Proportional to 431,236,267.20, 646,854,400.80 and 201,653,755.20
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Solution
The fourth proportional to 431,236,267.20, 646,854,400.80 and 201,653,755.20 is: 302,480,632.80
Step by Step Solution
- Step 1: Write the proportion equation
431,236,267.20 : 646,854,400.80 = 201,653,755.20 : x - Step 2: Convert to fraction form
431,236,267.20/646,854,400.80 = 201,653,755.20/x - Step 3: Cross multiply
431,236,267.20x = 646,854,400.80 × 201,653,755.20 - Step 4: Simplify right side
431,236,267.20x = 130,440,618,988,965,872 - Step 5: Solve for x
x = 130,440,618,988,965,872/431,236,267.20 - Step 6: Final answer
x = 302,480,632.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.